Improvement in



P. CRANS, Jr.

Lamp Burner.

Patented Aprl 17, 1866.

l No. 53,953.

M272: ess es UNITED STATES ArENr BEIGE.

PETER CRANS, JR., OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN. LAMP-BURNERS.

Speciicatio'n forming part of Letters Patent No. 53,953, dated April 17,1866; antedated April L', 1866.

To all whom t may concern.-

Be it known that I, PETER CRANs, Jr., of Philadelphia, Pennsylvania,have invented an Improvement in Coal-Oil Lamps; and I do hereby declarethe following to be a t'ull,clear, and exact description of the same,reference being` had to the accompanying drawings, and to the let-tersot" reference marked thereon.

My invention consists of an adjustable tube arranged above thewick-tube, and combined with devices described hereinafter, or theirequivalents, so that the upperend of the wick maybe exposed as desired,and so that the tube-is prevented from becoming sutticiently heated tochar the wick within the saine.

In order to enable others skilled in the art to make and use myinvention, Iwill nowproceed to describe its construction and operation.

On reference to the accompanying' drawings, which form apart of thisspecification, Figure l is a sectional elevation of the burner of acoal-oil lamp, showing my improvement; Fig. 2, a vertical section on theline 1 2, Fig. l; and Fig. 3, .a plan view.

A is the perforated base of theburner, which may be similar to that ofcommon burners; and B is the ordinary cap or dome, in which is the usualelongated opening a. To the base .A is secured a short wick-tube, b, andnear each edge of the latter is a vertical guide-rod, o, on which slidesan adjustable wick-tube, b. To the lower end of the tube b is`jointedone end of a curved rod, d, which extends through the side ofthe base A.

The Wick O is passed through the tubes b and b', and is so adjusted thatthe upper end may be atthe proper distance from the top of the cap, whenthe lamp may be lighted and burned in the usual manner.

Should it be found that too much of the Wickis exposed, so as to causethe flame to smoke, the outer end ot' the rod d should he depressed soas to raise the tube b', and thereby cover aportion of the Wick beforeexposed but iff'the tlame is too small the tube b is depressed byelevating the rod d, so as to expose a greater portion of the wick.

In burners ofthe ordinary construction the wick-tube is liable to becomeso heated as to char the wick Within the upper portion ofthe same, inwhich case it is necessary to remove the Wick in order to insert a newone or to detach the charred portion.

It will be seen that in the above-described burner the upper tube, b',is so small and so exposed to the fresh air admitted into the burnerthat it lcannot be heated to such an extent as to injure the wick. Asthere is no connection between the tube b and the burner, except throughthe medium ot' the rods c 0 d, the heat imparted to the tube cannot beconveyed to the burner. The latter is consequently maintained muchcooler than in lamps of the usual construction.

I do not desire to claim, broadly, the use of an adjustable tube forregulating the flame by exposing more or less ot' the Wick, as such adevice is shown in the patent granted to M. B. Vidal, July 30, 1861; but

I cla-im as my in vent-ion and desire to secure by Letters Patent- 'Ilieadjustable tube b', arranged above the Wick-tube b, and combined withthe rod d and guide-rods c c, or their equivalents, as and for thepurpose set forth.

In testimony whereof I have signed my name to this specification iu thepresence of two subscribing Witnesses.

PETER oRANs, JR.

Witnesses:

CHARLES E. FOSTER, J oHN WHITE.

